Package org.apache.uima.ruta.action

Source Code of org.apache.uima.ruta.action.AssignAction

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/

package org.apache.uima.ruta.action;

import org.apache.uima.cas.Type;
import org.apache.uima.ruta.RutaBlock;
import org.apache.uima.ruta.RutaEnvironment;
import org.apache.uima.ruta.RutaStream;
import org.apache.uima.ruta.expression.IRutaExpression;
import org.apache.uima.ruta.expression.bool.IBooleanExpression;
import org.apache.uima.ruta.expression.number.INumberExpression;
import org.apache.uima.ruta.expression.string.IStringExpression;
import org.apache.uima.ruta.expression.type.TypeExpression;
import org.apache.uima.ruta.rule.RuleElement;
import org.apache.uima.ruta.rule.RuleMatch;
import org.apache.uima.ruta.visitor.InferenceCrowd;

public class AssignAction extends AbstractRutaAction {

  private String var;

  private IRutaExpression expression;

  public AssignAction(String var, IRutaExpression e) {
    super();
    this.var = var;
    this.expression = e;
  }

  @Override
  public void execute(RuleMatch match, RuleElement element, RutaStream stream, InferenceCrowd crowd) {
    RutaBlock parent = element.getParent();
    RutaEnvironment environment = parent.getEnvironment();
    Class<?> clazz = environment.getVariableType(var);
    if (clazz.equals(Integer.class) && expression instanceof INumberExpression) {
      int v = ((INumberExpression) expression).getIntegerValue(parent, match, element, stream);
      environment.setVariableValue(var, v);
    } else if (clazz.equals(Double.class) && expression instanceof INumberExpression) {
      double v = ((INumberExpression) expression).getDoubleValue(parent, match, element, stream);
      environment.setVariableValue(var, v);
    } else if (clazz.equals(Type.class) && expression instanceof TypeExpression) {
      Type v = ((TypeExpression) expression).getType(parent);
      environment.setVariableValue(var, v);
    } else if (clazz.equals(Boolean.class) && expression instanceof IBooleanExpression) {
      boolean v = ((IBooleanExpression) expression).getBooleanValue(parent, match, element, stream);
      environment.setVariableValue(var, v);
    } else if (clazz.equals(String.class) && expression instanceof IStringExpression) {
      String v = ((IStringExpression) expression).getStringValue(parent, match, element, stream);
      environment.setVariableValue(var, v);
    }
  }

  public String getVar() {
    return var;
  }

  public IRutaExpression getExpression() {
    return expression;
  }

}
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